I don't think there's anything wrong with saying that the plan is to meet in X pub at Y time, then go to Z restaurant for a meal, then a few pints and then maybe go to a club after. Anything more detailed than that seems a bit forced.

the only person at the party in fancy dress has been the birthday girl.
there were kids party games and everyone was guilt tripped into joining in.
people who didn't arrive at the initial meeting point on time were left behind and summarily ignored when phone contact was attempted despite everyone having paid money up front for the minibuses.
it was strictly invite only (close close friends only, no partners), and only 3 people turned up.

There's a place in Norwich called Pedros that does Mexican food. The quality is quite low, but you get loads and it's very fatty so is perfect for students.
Anyway, they used to do bogof deals, which made it pretty good value. This twat I lived with made everybody go the day after the deal expired just because she wanted to go out on her actual birthday.

On one occasion he decided it would be a good idea to go clubbing in Paris on one of those cheap Eurostar tickets whereby you travel out in the evening and back in the early hours of the next day. Fine. Unfortunately as the nearest day we could all make it was Halloween, he insisted that we all went dressed as death (robes, scream masks, plastic scythes). I did try to point out that the French don't really do Halloween, but he was having none of it. In fact, he said that he'd contacted the girl who was organising the club night he wanted to go to and she'd told him there was a Halloween theme and a prize for the best costume.

Needless to say (after providing causing much hilarity/opportunities for insults for the passengers on the Metro), when we turned up at the night no one there was in fancy dress.